Level 150 - AS4758.1:2015 Standard Thinner design More comfortable to wear The lightweight Watersnake Inflatable Life Jacket Level 150 has been completely redesigned. It is thinner, more comfortable to wear and meets the stringent AS4758.1:2015 safety rating. It is designed for all-day comfort, with a soft neoprene neck-liner to avoid irritation or chaffing on the back of your neck. The tough and durable material is nylon Oxford 420D with convenient access for maintenance and servicing. It is rated for adults heavier than 40kg, with chest sizes 80cm to 140cm. This Watersnake Inflatable Life Jacket is designed flat for easy storage and has a manual inflation system - just pull down on the toggle and the life jacket will inflate within seconds, using the 33g CO2 gas cylinder. There is also a mouthpiece for oral inflation. Watersnake Level 150 Life Jackets are designed for general offshore and foul weather use, where a high standard of safety and performance is required. They are designed to maintain a fully clothed person in a safe position on their back with their head clear of the water without any action required by the user.